| Description | Return for 1927 and 1930 of numbers of detectives, numbers of crimes known to the police and percentages of detections;
Derbyshire County Constabulary number of CID detectives in each division 1930, cost of materials, cabinets, apparatus and chemistry equipment and cards for CID use;
Derbyshire police division Report of Crime Committed form;
Report of County CID work 15 Apr 1931 - detection from finger prints 7 Oct 1930 including 4 photographs of fingerprints, identification from peculiarity or deformity 14 Nov 1930, identification from local method index 21 Jun 1930, detection by elimination of local criminals by fingerprints 9 Sep, 11 Sep and 12 Sep 1930 with 4 photographs of fingerprints taken from crime scene, detection by finger prints in co-operation with Scotland Yard 28 Jun 1930 and 6 Feb 1931 includes 2 photographs of fingerprints, letter to Chief Constable about photography methods of finger prints 4 May 1931.
Found in Home Office file but presumed to belong to Derbyshire file:
'The evolution of the county CID' by the Chief Constable 15 Dec 1933, general standing order no. 192 duties of detective officers 20 Oct 1933, blank conviction card, history card and MO card, handwritten card for peculiarities or deformity |